Friends i have 5 x 1070 gpu
which coin give profit to mine ?
It is good to stay mining ethereum as of the moment. IF eth goes POS switch to more profitable altcoin. Zcash and Monero are promising. However, If eth is already POS, expect that old ETH miners will switch to other altcoins and the difficulty will increase because of that.
Your RIG must reach ROI state before ETH become POS. When it will happen? I dont know. ask Vitalik.